Why are solar terms called solar terms in winter?

There are 24 solar terms in a year, including 6 in winter. In the northern hemisphere,165438+1October, 65438+February, 65438+1October is winter. In climatology, the average temperature reached 10℃ for five consecutive days.

Twenty-four solar terms are special festivals in the calendar to express natural rhythm changes and establish "December construction". Four years old, three months in spring, summer, autumn and winter, two solar terms each month, each solar term has its own unique meaning.

Twenty-four solar terms accurately reflect the change of natural rhythm and play an extremely important role in people's daily life. It is not only a seasonal system that guides agricultural production, but also a folk system that contains rich folk customs. The twenty-four solar terms contain a long cultural connotation and historical accumulation, and are an important part of the long history and culture of the Chinese nation.

Climatic types of 24 solar terms

Twenty-four solar terms are the product of agricultural civilization and the knowledge system formed by ancient ancestors by observing celestial movement combined with geographical climate and phenological laws. Agricultural production is closely related to geographical and climatic resources, and superior geographical and climatic resources are important conditions for the birth of agricultural civilization.

China is located in the east of Asia-Europe continent and the west coast of the Pacific Ocean, with great differences in thermal properties between land and sea, forming the most typical monsoon climate in the world. Monsoon climate is a mixture of continental climate and maritime climate. In winter, affected by the dry and cold air flow in the inland, the weather is cold, dry and rainy; In summer, it is hot, humid and rainy because of the warm and humid air currents in the ocean.

Adequate sunshine, abundant precipitation, high temperature and humid rain and heat are very superior climate resources in China. The high temperature period is consistent with the rainy period, and the water and heat match well, which is very beneficial to the growth of crops. Climate factors include illumination, temperature and precipitation, among which precipitation is an important factor of climate. Twenty-four solar terms accurately reflect the changing law of natural rhythm and play an extremely important role in ancient agricultural production.